Al-Kāfi

Hadith 1480
congregational-prayerjurisprudence
8ـ جَمَاعَةٌ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحُسَيْنِ بْنِ سَعِيدٍ عَنِ الْهَيْثَمِ بْنِ وَاقِدٍ عَنِ الْحُسَيْنِ بْنِ عَبْدِ الله الأرَّجَانِيِّ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) قَالَ مَنْ صَلَّى فِي مَنْزِلِهِ ثُمَّ أَتَى مَسْجِداً مِنْ مَسَاجِدِهِمْ فَصَلَّى مَعَهُمْ خَرَجَ بِحَسَنَاتِهِمْ.
8. A group has narrated from has narrated from Ahmad ibn Muhammad from form al-Husayn ibn Sa‘id from al-Haytham ibn Waqid from al-Husayn ibn ’Abd Allah al-Arjaniy who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘If one performs Salah (prayer) in his house then comes to one of their Masjid and performs Salah (prayer) with them, he leaves with all of their good deeds.’”
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī